Tank-car.



L. T. GANFIELD.

Patented Aug. 11, 1914 2 SHEETS-SHEET l.

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ATTORN EV L. T. CANFIELD.

TANK CAR.

APPLICATION FILED NOV. 1| 1912` Patented Aug. 11, 1 914.

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ATTORNEY UNrrnD serres PAT "1 TT FFE.

LEV/'IS TENNIS CANFlEiD. Cl" CHICAGO. ILLINOIS.

TANK-CAR.

Specification or' Application filed November Tank-Cars, ofA which the followingis a "full,y

clear, and exact description, such as will enable others skilled in the art to which it appertains to make and to use the saine, ref, crence being had t0 the accompanying drawings, which illustrate the preferred lorm ot the invention, though it is to he understood that the inrention is not limited to the exact details of construction shovvfn and described, as it is obvious that various modilications thereof will occur to perso-ns skilled in the art.

In said drawings: Figure l is a transverse sectional View of a tank ear, the section being taken, at the right, just'forwardly of the body bolster, at the left, substantially midway between the body holsters. Fig. 2 is a side elevation of one end of a tank car of my invention. Fig. 3 is a. half-,plan view. Fig. 4 is an end view of a modified form of tank, and, Fig. 5 is a fragmentary detailof a reinforce or brace within the tank.

As the parts at each end are duplicates, but-half the car is illustrated.

This invention relates to improvements in tank cars and consists in certain features of novelty and utility. wherebyv` a very simple and economical tank car adapted to all conditions ot' service is provided, and which is, ot' minimum weight.

ln the construction of tank cars varicus types of devices have been used for anchoring the tank in position on the underl'rame. these devices comprisingr means which have been secure-d at one or more places to the tank and to the undertrauie. cr ot' head blocks secured to the miderframe. beyond the ends ol the tank. or of anchor castings or stop devices depending' from the tanks and cooperatingr with various parts ot' the un derfranies. to prevent longitudinal shitting oll the tanks on the undertramcs.

lt has been supposed that it was necessary to ciaistruct tank cars in such manner that the tank might be readily removed from the undert'rame for purposes cl' repair. and with the heavy type of undcrtranle sometimes used, comprisingT center sills` side sills and interlmdiate sills. this is necessary. but owing to the concentration of the load contained in a cylindrical tank, it has heen Letters Tests-n1..

. Patented Aug'. 11.. 1914.

1, 1912. serial ne. 729573.

Ufo-und in `practice that but two center sills and two holsters. or the equivalent of boleters, .are required. Associated with these, for convenience ol" the trainlnen, are usually provided running?r boards upon which the trainnien may pass, and these running boards with their supports may7 foe of iight -weight and readily removable from the tank and underlrame.

T here are disadvantages in the connection of tanks ot' tank cars to their nnderfralnes at intervals, owing to the unequal strain caused by service conditions. There is in some respects 'a disadvantage in a single connection ofthe tank and underframe at die connection serves as a' rocking support upon which the tank may rock during buff,- ing ishocks, and thereby cause excessive pounding at the. holsters, and there is als a disadvantage in the application of. head blceks to the underframe beyond the tanks,

tank cause the tank to intpinge the head blocks placed between the 'holsters and the end sills, thereby driving down the end sills and causing a droopin T thereof, thus lowering the coupling below ,Interstate Commerce Cinnmissicn standard requirement.

It has been generally supposed that owingr to the nature of the .lading a tank could not be riveted to the .indertrame throughout its cntirh length` because it was believed that expansion of the tank. due to the lilling of the tank with het fluids. would set up enormous stresses which wonld rupture the rivet connccticn of the tan-k to thc underl'ranie when the tank would expand due to the heat of the lading. This latter theor)v has led car builders to construct tank cars in which the tank was not 'fastened to the undcrt'rame at all. exceptby the` conventional tank bands, and the tank was prevented 'from shifting by various independent devices attached respectively to the tank and the underframc.

In this invention there are provided center sills 1, which have horixontal bottoni flanges L) and oblique top flanges 3,'the center sills l lleimgv spaced' apart the. distance required about lil apart. 'l`o the top flanges 3 of thc center sills there is riveted directly the bottcm sheet l of the tank by rivets 5. which pass through the bottoni sheet vl and the. top

5 are provided at distances apart throughl .the middle2 owing to the fact that Such `mid because in such structures shifting of the.

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ilanges 2l ol the center sills and the r- .eige

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thicker instal than is the metal of the sheets connection, but an equal distribution of the latter define the perimeter of the casting 8,

out the entire length of said bottom sheet between the holsters, thus riveting the bot` teni sheet of the tank rigidly and directly to the center sills.

lf the. bottom sheet 4 is of excessively thininalerial, rupture ot the rivet connection referred to might occur, and to avoid this the said sheet 4 is preferablyformed of ashect ot metal continuous from end to end of the body of the tank and of relatively G. forming the majoi. portion-and theopper part of the tank. When a tank car is t ius constructed' it will be found that the tank may expand in all directions when it is filled with hot fluid lading, and the rivet connection of the tank and undcrfranie will cause slight elongation'of the underframe, but this elongation is 'so slight that it is within the elastic limit of the metal comprising the center sills 1, and there is no real danger of a rupture of the rivet connection between the tank and `said center sills.

lf the rivet connection of the. tank and sil-ls were excessively-strong and intermit tently arranged, there, might and probably would be some danger ofruptnring the rivet rivets 5 throughout the lengthv of the Itank will cause the expansion ot the tank to be transmitted through .suc-hi rivet connection to the center sills and cause anrelongatioi of such center sills, but alwayswithin the 1 elastic limit of. the metal comprising the center sills themselves'. VVhenthe'center sills and tank are thus connected and the underfrarne comprises only tliecentersillsand holsters plus such supports asymayihe neces sary for running board, it will be found that the tank and underfraniefmaybe' readily lifted from the trucks, it necessary,for re-V airs. p incidental to thekdetails ofgconstruction hc-reinbcfore referred to, I have provided-h lichter substitute, which comprises at each truck a. pair of castings 8, which'arevforined with a Aperforated central 'web portion 9, and with reinforcing ribs or flanges 10, which with the eXoept-ioiifof that portion if the mitm-"edge thereof marked l,11 in tliefdrawings, which consists et' a fla-nge to which the running board supporting llii'ackct 12 may be bolted,L ls best shown in Fig. 1, so that, if necessary, said running` board bracket may be removed.

-It will be observed that the upper innen corner portion of the casting 8- is recessed at. 13 to receive the upper Hang" 3 of the center and that the` upper surface of said castin, 8 istconcentric with the bottom sheet ll ot tie tank, the" top center sill flanges 3 being also concentric with said sheet 4, whereby a support conforming to the con- 1. In a tank car, the combination; mprisy ing spaced flanged center sills, the lnges of tourot thetank is provided at each bolster.

1t hwill also bc noted that rivets 15 pass through the bottom sheet It, and through the ribs or flanges 10 before referred to, thereby securing the tank in position with relation to the castin s 8.

.ett the ends o the center sills there are provided substitutes for the conventional end sills, comprising horizontal angles 1G and the oblique angles 17, which are suitably connected with the top and bottom flanges and with the Webs of the center sills, the angles `16 and 17 beinglprovided at cach end of the underframe. Extending from end to end 'of the underrainc at the outer ends of the angles 16 are angles 20, which serve as ties for uniting the angles 16 and 17, the brackets 12, before referred to, and the supplemental brackets 21-22, which supplemental brackcts serve "s intermediate supports for the running boards 25, the angles 2O being rivetedto the horizontal legs of the angles 21. Thus when4 it is necessary to remove the tank from the trucks, the running boards may be removed by .withdrawing the bolts 30 which connect` the brackets. 12 and the angles 21 with their respective supports.

It is preferred that the side bearing 31 and center bearing plate 32 shall be formed separately from the castings 8, andv said castings' 8 at opposite sides of the center sills are connected by the `bottom plate 33. rivets 34 passing vertically through the bottom flanges .of the lcastings 8 and said .bottom plate 33, and in soglie instances throiigh the bottom flanges 2 oft the center sills and serv.A

,ing also to connect the side bearing 31 in proper position.

Figs.` Ljfanttl illustrate Within the tank a modifioation which may or. may not be used,

angles 4 1to the interior of the shellaof the. tank'for the purposecf stillening the tank.

'and comprises a. diaphragm LtO'cQnnected by above tliebolste'rs` for at anyv intermediate points between the holsters. AConnected with the center. sills-1 aregpush pole pockets 42,-, which are preferably of Vcast 'metal formed with attaching flanges' 43, to permit rveting \said` push pole, pockets to the. center `running boards are supported other than as shown inthe drawings, it mayI be anadvantag'eto have ,thev pushlfpole pockets vsecured to"l the sillsrather than, as is common, on the holsters.

' What I claim is:

which are deflected upwardly, a tank oomprising a plurality of body sheetsndf ycontinuous bottom sheet o o-extensive with the, length of said tank, said bottom sheet being l in continuous direct contact with and riveted directly to said upwardly directed fianges, a bolster connected directly to said sills and bottom sheet and a bottom cover plate uniting parts of said bolster directly to bottom fianges of the sills.

2. In a tank car, the combination comprising flanged center sills, a tank comprising a thick bottom sheet and relatively thin body sheets, said tank being secured by a rivet connection through said bottom sheet and co-extensive with the length thereof to the upper flanges of said center sills and being in'direct contact therewith throughout vsubstantially the entire length of said tank.

3. In a tank car, an underframe comprising only a pair of spaced center sills and holsters comprising spaced castings provided with arcuate tops underlying portions of the center sills, and a tank in direct contact with and riveted to said sills by substantially equally spaced rivets practically throughout the length of said tank.

4. In a tank car, the combination comprisin g center sills and bolster castings, each casting adapted to conform to the curvature of a tank, and a tank resting in direct contact with said sills and bolster castings and riveted directly thereto, the tank beingl secured to the sills by substantially equally spaced rivets throughout its length.

' 5. In a tank car, thecornbination comprising an underframeconsisting of longitudinal sills with tank-attachingflanges, bolstcrs with arcuate tops, the anges of said sills resting upon, extending'beyond and being connected to said arcuate tops, and a tank directly contacting with said flanges and also resting upon and being connected to said arcuate tops, said tank being substantially equi-distantly riveted to said sills throughout its length.

6. In a tank car, the combination'compris ing an underframe, and a tank in direct surface connection with and conneetedby direct rivet connection thereto sub antially throughout the length of the tank and sills by equally spaced rivets, so as to develop the elasticity of the underframe during expansion of the talr` 7. In a tank car, the combination compris ing an underframe having' sills with upper and lower flanges and holsters conformed to the contour of said sills and flanges and in reinforcing contact with each, and a tank in direct surface Contact with said upper flanges and connected by direct and equidistant rivet connection thereto for substans tially the entire length of the tank to S`ubstantially develop the elasticity of the underframe during expansion of the tank.

8. In a tank ear, spaced center sills and a tank in continuous direct surface Contact therewith throughout the length of said tank and secured directly thereto by direct rivet connection, the rivets being yequally spaced so that the tank and sills mutually support each other throughout the length of the tank, and the sills may be caused to expand uniformly with the tank.

9. A tank car comprising a tank provided with a continuons bottom s heet, center sills connected rigidly to said bottom sheet by direct rivet connection and in direct surface contact therewith substantially throughout the length of the tank, the tank resting upon and being supported by the sills near its ends and supporting the sills without intermediate connection intermediate its end portions.

10. In a tank car, the combination comprising spaced channel-shaped center sills having their upper flanges deflected upwardly and a tank formed with a relatively thick continuous bottom sheet in direct surface contact with and riveted directly to said fianges and bearing directly on said flanges throughout its length.

` 1.1. In a tank car, a tank having a relatively thick bottom sheet, relatively thin sheets in the upper part of the tank, center sills in direct contact with and riveted directly to said bottom` sheet throughout its length by equally spaced rivets, and body bolsters riveted to the tank and to said sills.

12. In a tank car, a tank formed of sheets of different thicknesses,'"the thicker of said sheets being a continuous bottom sheet, center sills in direct contact with said bottom sheet, and substantially equally spaced riv-y ets passing through the bottom sheet and sills to secure theml together throughout the length of said bottom sheet.

13. In a tank car, spaced sills, a superposedif cylindrical tank in direct surface contact with and directly riveted to said sills by substantially equally spaced rivets throughout the major part of the length of said sills, and holsters riveted to said sills and tank.

In Witness whereof I have hereunto set my hand in the presence of two witnesses.

LEWIS TENNIS CANFIELD.

Witnesses S. W. TU'i'rLE, FREDERICK H.,G1Bs.

oples of this patent may ne obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. CQ 

